chore: import upstream snapshot with attribution

server/tables/pgcatalog/pg_shdescription.go

@@ -0,0 +1,79 @@
+// Copyright 2024 Dolthub, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pgcatalog
+
+import (
+	"io"
+
+	"github.com/dolthub/go-mysql-server/sql"
+
+	"github.com/dolthub/doltgresql/server/tables"
+	pgtypes "github.com/dolthub/doltgresql/server/types"
+)
+
+// PgShdescriptionName is a constant to the pg_shdescription name.
+const PgShdescriptionName = "pg_shdescription"
+
+// InitPgShdescription handles registration of the pg_shdescription handler.
+func InitPgShdescription() {
+	tables.AddHandler(PgCatalogName, PgShdescriptionName, PgShdescriptionHandler{})
+}
+
+// PgShdescriptionHandler is the handler for the pg_shdescription table.
+type PgShdescriptionHandler struct{}
+
+var _ tables.Handler = PgShdescriptionHandler{}
+
+// Name implements the interface tables.Handler.
+func (p PgShdescriptionHandler) Name() string {
+	return PgShdescriptionName
+}
+
+// RowIter implements the interface tables.Handler.
+func (p PgShdescriptionHandler) RowIter(ctx *sql.Context, partition sql.Partition) (sql.RowIter, error) {
+	// TODO: Implement pg_shdescription row iter
+	return emptyRowIter()
+}
+
+// PkSchema implements the interface tables.Handler.
+func (p PgShdescriptionHandler) PkSchema() sql.PrimaryKeySchema {
+	return sql.PrimaryKeySchema{
+		Schema:     pgShdescriptionSchema,
+		PkOrdinals: nil,
+	}
+}
+
+// pgShdescriptionSchema is the schema for pg_shdescription.
+var pgShdescriptionSchema = sql.Schema{
+	{Name: "objoid", Type: pgtypes.Oid, Default: nil, Nullable: false, Source: PgShdescriptionName},
+	{Name: "classoid", Type: pgtypes.Oid, Default: nil, Nullable: false, Source: PgShdescriptionName},
+	{Name: "description", Type: pgtypes.Text, Default: nil, Nullable: false, Source: PgShdescriptionName}, // TODO: collation C
+}
+
+// pgShdescriptionRowIter is the sql.RowIter for the pg_shdescription table.
+type pgShdescriptionRowIter struct {
+}
+
+var _ sql.RowIter = (*pgShdescriptionRowIter)(nil)
+
+// Next implements the interface sql.RowIter.
+func (iter *pgShdescriptionRowIter) Next(ctx *sql.Context) (sql.Row, error) {
+	return nil, io.EOF
+}
+
+// Close implements the interface sql.RowIter.
+func (iter *pgShdescriptionRowIter) Close(ctx *sql.Context) error {
+	return nil
+}